It is probably a bit of both. From the same Wikipedia article > symptoms can include slight or partial paralysis, anxiety, insomnia, confusion, agitation, abn

It is probably a bit of both. From the same Wikipedia article > symptoms can include slight or partial paralysis, anxiety, insomnia, confusion, agitation, abnormal behavior, paranoia, terror, and hallucinations There is more than just pain here. The virus changes the host behavior, making it more aggressive, so it is very possible that it also promotes a panic reaction to pain.